高考中有些解析几何问题,若用坐标思想选择代数方法解答,往往思路清晰,但运算量大,难以进行到底.若从平面几何的角度来审视,分析题中几何量之间的关系,认清问题的本质,挖掘其中隐含的平面几何背景,合理转化,往往会化难为易,收到出奇制胜的效果.现以各地高考试题为例加以说明,以期对同学们有所帮助.一、利用两点之间线段最短求解 Some college entrance examination in the analysis of geometric problems, if the use of coordinate thinking to choose algebraic methods to answer, often clear thinking, but the amount of computation, difficult to proceed in the end.If from the perspective of plane geometry to examine the relationship between the geometry of the question, recognize The essence of the problem, mining hidden geometric plane background, reasonable conversion, often difficult for the easy, surprisingly winning the effect received.According to the college entrance examination questions as an example to illustrate, with a view to help students.First, the use of two Point line between the shortest solution